Here is the full list of all 50 Icewind Dale: Enhanced Edition achievements.
Complete the game on the Heart of Fury difficulty setting.
Reach level 30 in three classes with the same character.
Reach level 30 with a Mage or Sorcerer.
Reach level 30 in two classes with the same character.
Increase an attribute score to 25.
Reach level 30 with a Cleric, Druid, or Shaman.
Sang to the Sea Spirit Elisia.
Killed Icasaracht, the White Dragon matriarch.
Completed Heart of Winter.
Reach level 30 with a Fighter, Ranger, Paladin, Monk, or Barbarian.
Visited the Sea of Moving Ice.
Discovered the true identity of the Lonelywood werewolf.
Brought a rose of ice to the bard, Murdaugh.
Assisted the dwarven smith Tiernon to forge an ice weapon.
Acquired the Singing Blade of Aihonen.
Visited Gloomfrost.
Acquired the infernal Vexed Armor.
Visited the Burial Isle.
Completed Trials of the Luremaster.
Become a Fallen Paladin or a Fallen Ranger.
Visited the ruined castle in the Anauroch desert.
Obtain Grand Master weapon proficiency level.
Have six party members who are evil-aligned.
Obtain a Lore skill of 100 or more.
Have six party members who are neutral-aligned.
Have six party members who are good-aligned.
Complete the game with only a single party member.
Complete the game on the Story Mode difficulty setting.
Killed Belhifet.
Completed Icewind Dale.
Reach level 30 with a Thief or Bard.
Acquired the Restored Blade of Aihonen.
Revisited Easthaven.
Restored the Arboretum to its former glory.
Memorized Malavon's Rage.
Turned Malavon's Iron Golems against him.
Acquired the Black Swan Armor.
Found Pale Justice, the Holy Avenger sword.
Freed all slaves in the Wyrm's Tooth glacier.
Killed Joril, the leader of the Frost Giants.
Visited Wyrm's Tooth Glacier.
Killed Terikan, the Lich.
Visited Dorn's Deep.
Reduce Armor Class to -15 or lower.
Reach 150 Hit Points.
Killed 1,000 creatures.
Visited the Severed Hand.
Killed Yxunomei, the Marilith demoness.
Visited Dragon's Eye.
Visited Kuldahar.